Inertia stripper



Aug. 23, 1927.

R. P; M. DAVIS INERTIA STRIPPER Filed Aug. 14. 1926 Patented Aug. 23, 1927.

UN'EE STATES PATENT OFFICE.

INERTIA STRIPPER.

Application :filed August v1.4., 1926. Serial No. 129,179.

My invention relates to method and apparatus for stripping brick molds from molded brick.

In the manufacture of molded brick it has been foundlin so far as the ejection of the brick from the mold is concerned) that the brick falls into two Classes, namely: first, those brick whose ratio of frictional area to the weight of the molded brick is such that no pressure is required on the top of the brick during the lifting of the mold from the loaded pallet, and second, those brick requiring what is commonly known as a push board to hold the brick in Contact with the pallet during the mold lifting or stripping operation.

As the mechanism employed incident to the use of a push board is quite complicated and expensive in addition to creating structural problems in the designing of other parts of the brick making machinery, it is v*proposed to eliminate the push board and push board operating mechanism.

The principal object of the invention is to provide means for raising the mold away from the brick with such rapidity that this action plus the inertia. of the brick makes it unnecessary to hold the brick to the pallet by mechanical means during the stripping operation.

Other and further objects and advantages of the invention will be apparent from the following description when considered in connection with the accompanying drawings1 wherein:

Figure 1 is a side elevation of the invention and Figure 2 is a top plan, thev mold being shown in dotted lines.

Referring more particularly to the drawings wherein like reference numerals denote corresponding parts throughout both views, the numeral 1 designates the supporting frame work for the stripper mechanism. rlhis frame comprises the four uprights 2 which supporttwo spaced upper and lower lloc-rs 3 and l respectively.

Projecting upwardly through openings (not shown) in the floors 3 and l of the frame work are two post-s 5 which at their bottom are connected by cross bar 6 and adjacent their top are connected together by cross bar 7. Each post 5 supports a lifting angle or rail 8, fastening means such as the bolts 9 serving to secure the rails to the top extremities of the posts. The posts 5, cross bars 6 7 and lifting rails 8, constitute what may be termed a vertically reciprocating stripper frame 1()7 the posts 5 being guided and steadied in their movement through the floors by means of guide angles 11 and l2.

The pallet 13 with the brick filled or loaded sectional mold 11i thereon is deposited by any suitable means (not shown) upon rails 15 in turn supported upon posts 16 mounted upon the floor 3. F rom these rails 15, the mold is mechanically strippedy from the brick in a manner about to be described.

Mounted upon the lower floor 4 of the frame work 1 is a pedestal 26, to which one end of a rocker arm 17 is pivoted, the other end of the arm being pivotally connected to the lower end of a connecting rod 18, the upper end of the rod 18 being pivotally connected to the cross bar 7, as at 19. A coil spring 20, enclosing the upper end of the connecting rod 18, bears at its opposite ends against the cross bar 7 and the floor 3 respectively, and normally supports and tends to elevate the stripper frame 10.

The stripper frame 10 is vactuated by means of a cam fiXedly mounted on the shaft 21, in turn rotatably mounted in pedestals 22 (only one of which is shown) supported upon the floor 4. A lug 23 carried by the rocker arm 17 is adapted to be intermittently engaged by the cam 25, as the shaft 21 is constantly rotated in an anti-clockwise direction by any suitable means (not shown) In operation the rotation of cam 25 lowers the lifting rails 8 and in doing so compresses spring 20. In this position there is a space created between the lifting rails and the bottom of the ends of the mold. At the instant the high part of the cam 25 leaves the lug 23 the entire stripper frame 10 is released and under the action of the spring 2O is raised with great rapidity into contact with the mold, thus lifting` the mold clear of the brick as shown in dotted lines in Figure 2.

Should it be found advantageous to raise one end of the mold before the other the pillar block 2a may be attached to the top of the corresponding lifting rail 8. After the mold has been stripped from the brick the brick is withdrawn on the pallet and the frame descends for a repetition of the operm ationB Having thus described my invention, what I claim is:

l. In a device for stripping` molds from molded brick, a traine Work, a Vsupport mounted on said framework for receiving a pallet with brick containing` mold thereon, a stripper lrame reciprocably inountedin said frame Work provided With lifting,` tracks"V normally beneath and out of Contact with said mold, and means for projecting said stripper traine upwardly With great rapidity thereby causing said' tracks to strike said mold and lift the saine with great rapidity av-fay troni said brick. l

2. In a device for .stripping molds troni nolded brick, a. frame Work, a support mounted on said traine Work tor receiving a pallet with brick containingv mold thereon, a spring actuated stri per iframe reciprocably mounted in said traine Work provided With mold engaging means, actuating means tor normally depressing' said stripper 'traine against the tension ot said spring,r ont ci contact `with said inold.j said actuating,` means adopted at predetermined times to release Said stripper frame thereby causing said mold engaging means to Contact with said mold and litt the saine with great rapidity away from said brick.-

3. In a device for stripping molds vtrom molded brick, a suppe-rt for receiving` a pallet with brick containing mold thereon, a stripper trame, and means for projecting Said stripper frame With considerable speedv against said mold and thereby causing the mold to be stripped with great rapidity from said brick. p

i. In a device for stripping molds from molded brick, a support tor receiving a pallet with brick containing mold thereon, aV

stripper trame having` mold engaging members normally ont of contact with saidinold,

and meansfor projecting said mold engaging` members' inte :engagement with said 1 ping' molds from molded brick consisting in holding' the brick Containing mold upon a pallet `by gravity and then stripping the mold from the brick With such rapidity that the inertia of the brick Will maintain the brick undisturbed on said pallet. y

7. In a device for stripping molds from molded brick, a support for receiving a pallet with rick containing` mold thereon, a stripper traine, and means for projecting` said stripper traine upwardly With zc'iifisidi erable speed and thereby causing the mold to be stripped with great rapidity from said brick.

In testimony whereof I aiiix.my signatnre.

ROY PAUL MILLER DAVIS. 

